vulnerability
Red Hat: CVE-2017-18078: systemd: Unsafe handling of hard links allowing privilege escalation
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:N/C:P/I:P/A:P) | Jan 29, 2018 | Jul 9, 2025 | Jul 9, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
Jan 29, 2018
Added
Jul 9, 2025
Modified
Jul 9, 2025
Description
systemd-tmpfiles in systemd before 237 attempts to support ownership/permission changes on hardlinked files even if the fs.protected_hardlinks sysctl is turned off, which allows local users to bypass intended access restrictions via vectors involving a hard link to a file for which the user lacks write access, as demonstrated by changing the ownership of the /etc/passwd file.
Solution
no-fix-redhat-rpm-package
References
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